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            <h2 class="title" style="clear: both"><a id="envset_metadata_dir"></a>DB_ENV-&gt;set_metadata_dir()</h2>
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      <pre class="programlisting">#include &lt;db.h&gt;

int
DB_ENV-&gt;set_metadata_dir(DB_ENV *envp, const char *dir); </pre>
      <p>
        The <code class="methodname">DB_ENV-&gt;set_metadata_dir()</code> method sets
        the directory where persistent metadata is stored. By default,
        persistent metadata is stored in the environment home
        directory.
    </p>
      <p>
        When used in a replicated application, the metadata directory must
        be the same location for all sites within a replication group.
    </p>
      <p>
        The <code class="methodname">DB_ENV-&gt;set_metadata_dir()</code> method may
        not be called after the <a class="xref" href="envopen.html" title="DB_ENV-&gt;open()">DB_ENV-&gt;open()</a>
        method is called. The directory identified by this method must
        already exist when the <code class="methodname">DB_ENV-&gt;open()</code>
        method is called. The directory identified by this method is added
        to the environment's list of data directories, if this directory
        is not already included on that list. 
    </p>
      <p>
         The database environment's metadata directory may also be configured
         using the environment's
         <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a>
         file.  The syntax of the entry in that file is a single line with
         the string "set_metadata_dir", one or more whitespace characters,
         followed by the directory location. Because the
         <a href="../../programmer_reference/env_db_config.html#env_db_config.DB_CONFIG" class="olink">DB_CONFIG</a>
         file is read when the database environment is opened, it will
         silently overrule configuration done before that time.
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      <p>
         The <code class="methodname">DB_ENV-&gt;set_metadata_dir()</code> <span>
            <span>
                  method returns a non-zero error value on failure and 0 on success.
            </span>
            
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              <h3 class="title"><a id="idm140711177284400"></a>Parameters</h3>
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                <h4 class="title"><a id="idm140711177286000"></a>dir</h4>
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                 The <span class="bold"><strong>dir</strong></span> parameter
                 identifies the directory used to store persistent metadata
                 files.
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              <h3 class="title"><a id="idm140711177282992"></a>Class</h3>
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            <a class="link" href="env.html" title="Chapter 5.  The DB_ENV Handle">DB_ENV</a>  
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              <h3 class="title"><a id="idm140711177315152"></a>See Also</h3>
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            <a class="xref" href="env.html#envlist" title="Database Environments and Related Methods">Database Environments and Related Methods</a>,
            <a class="xref" href="envget_metadata_dir.html" title="DB_ENV-&gt;get_metadata_dir()">DB_ENV-&gt;get_metadata_dir()</a>
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